Weighing machinery



(No Model.) 9 Sheets-Sheet 1. A. H. EMF-RY. WEIGHING MACHINERY.

Patented June 5,1883.

WITNESSES.

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' A. H. EMERY.

WEIGHING MACHINERY. N0- Z'78,906. I Patented June 5,1883.v

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WEIGHING MACHINERY.

Patented June" 5,1883,

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No. 273,906. Patented June'5, 1883.

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(No Model.) 9 Sheets-Sheet 7.

A. H. EMERY. v WBIGHING MACHINERY. No. 278,906. Patented June 5,1883.

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WE-IGHING MACHINERY.

tented June 5,1883.

(No Model.) 9 heets-Sheet 9Q A. H. EMERY. WEIGHING MACHINERY. H 278,906- [I v Patented June 5,1883. 9 8

5 Eintass m 1,; A//////M A UNITED, STATES PATENT OFFICE.

, ALBERT H. EMERY, OF NEV YORK, N. Y., ASSIGNOR TO THE EMERY SCALE COMPANY, OF STAMFORD, CONNECTICUT.

WEIGHING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 278,906, dated June 5, 1883.

' Application filed February 5, 1881. (Nomodcl) v To all whom it may concern ably-arranged levers, so as to reduce it in any Be it known. that I, ALBERT H. EMERY, of desired degree or proportion. In the primary the city, county, and State of New York, have reducers the small multiple pressurechaminvented certain new and useful Improvements bers are secured to the base of the reducer by 5 in. N'Veighing Machinery, of which the followscrews, and are each provided with a small ing is a specification. pressure chamber column resting 011 a dia- The invention relates to scales in which the phragm held at its periphery by a casing-ring,

pressure is transmitted from the load platform and surrounded and fastened to the base by a or platforms to the weiglrbeams through the thin scaling ring. The separate chamber- 60 medium of liquid contained in suitable champieces are removable from the reducer-frame bers and pipes. through a central opening in the base thereof, The invention. will be described in its applithroughwhich opening the pressurepipes pass cation to railway-track scales. to each small chamber. The reducer-columnis The liquid-supports are arranged at proper limited in its descent by stop-screws, which 65 I 5 intervals beneath the platform, on whichlatter may be employed for fixing it in position for a railway-track may be mounted. The supadjustment in filling the main liquid-chamber ports are preferably constructed with columns, in thehead of the reducer and for shipping. The each having a lower part fastened to the base main chamber is filled through a ductclosed and an upper part fastened to the surroundbyatransverse screwplug. The secondary re mg shell or casing by means of diaphragms ducers are constructedwith equal paired chamsecured permanently to each. A central screw bers, the two chambers of each pair receiving is inserted in the head to separate the parts liquid from branches of the same conducting when required. The column-head is sur pipe, and being so placed as to balance the mounted by a gum or other spring surrounded pressure on opposite sides of the axis of the 7 by a rigid stay-ring, and the spring by a bellcolumn against which. theyact. The tops of shaped cap, on which the platform rests, the the small chambers are formed with diacap extending downward around the upper phragms, either annular or continuous, held at part of the shell to shelter the diaphragm and their peripheries by clam 'ling casing-ringsring andlieep water from the upper part of one for each ehamberall of which rings are 0 the case. The shell is fastened to the base by held down by a single pl ate, through openings tap-screws inserted in countersinks and sealed in which the small pressure-columns act on the tomake the joints liquid-tight. From the supmain column. The said plate extends over ports the pressure is transmitted through liqthe entire base of the reducer, and is secured uid-pressure pipes to any necessary number of thereto by screws or bolts. The bottom of each 3 5 liquid pressure reducers separate from the small pressure-chamber consists of an annular weigh-beam and its frame and connections, and plate soldered to the upper diaphragm, and a from these reducers to paired liquidpressure central stem ,to which the inner edge of the-air chambers, acting directly upon the column of nula-r plate is fixed, and which receives the the weigh-beam or on the column or columns nozzle of the conducting-pipe. The base-stems 40 of one or more intermediate pressure-reducers of the small pressure-chambers are secured to which transmit the pressure to the weigh 'the main base by fixing tubes or rings,through beam column. By the term reducer is which the conducting-pipes pass; meant anapparatus consisting of one or more The pressure-column of the weiglrbeam is pressure-columns mounted through the meconstructed in annular form, containing a cen- 5 4 5 dium of flexible plates in a suitable casing, and tral stem with an enlarged head resting on the receiving at one end the pressure from the annular column and receiving the beam -conplatform-supports through the medium of one nections. The beam is constructed with an enor more small liquid-chambers, which presslarged head, made hollow for the reception of I me is transmitted from the pressure column balancing material. The main beam connects I00 50 or columns through the medium of a liquid at its end with 'a secondary beam or indicatorchamber or chambers of larger area, or suitrod having much greater angular motion.

The weights are ol'three kinds, to wit: first,

sliding weights on the main beam and indicater-rod and on the weight-rods, attached to the former for balancing and tor fractional weighing second, suspension weights arranged at different points in the length of the beam in. sets or sections, sup 'iorted on frames adapted by their vertical motion to apply and remove the weights in succession; third,ono or more weights suspended from either end of the beam by suitable rods through the medium ot' conical seated attiu-hing-mits, and ap ')licd or removed by the vertical motion ot' a platt'orm on which they are supported.

The scclitmal weight-frames, which require corrsiderablc range of vertical movement to apply or remove the whole set of weights, are operated by compound levers, to which are conuceted rods working in adjustable guides through t'riet ion-boxes in the frame to hold the levers in any position in which they are set. These fixing-rods carry imlicators attached thereto by suitable stocks, and, in connection withgraduated i|1dicator-plat'es,sho\vthe number or value ot' the weights applied tothe beam. To counterbalalice the weight supporting l'rame andthe weights resting thereon,a weight is employed attachedto an arm connected with the weight-frame through an eccentric pulley amt strap,so as to produce a variable et't'ect corresponding approximately with the weight to be counterlmlanccd.

The vertical movement of the beam is limited by adjustable stopscrews applied either to the said beam or to the case or t'ramethcreof. The sliding weights are operated by sliding rods supported by studs on the scale-frame, and t'urnished with fingers for catching the weights. The imlicator-rod is made in two parts with a screw connection, so that its free end maybe madethin and light. llts extremity is l'urnished with a llttttle-polllt' attached by a screw coupling .or clamp. It is guided by a vertical standard secured to the weighbeam or scale-t'rame by an adjustable holder, by which the said standard is set up or down to adapt it; to limit the vertical motion of the indicator-rod as desired. The position of the .indicator-rod is shown by a graduated plate secured adjustably to the weigh-beam or t'rame by an attaching-plate.

The entire beam l'ramc, with the beams, weights, and connections, is inclosed within a double case, the outer case being opened to give access to the operatinglcvcrs and to expose to view the weights and indicator through the glazed inner case, which contains and protects the working parts.

The platform. used in connection with the scale may be of any suitable construction; but it is )ret"errcd to use the improved platt'orm hereinafter described and claimed. 'thisplatform is removable and rests upon an independent load-frame fixed against horizontal motion by flexible stays, permitting its vertical play. The load-frame is bolted to rigid knee-plates interposed between it and the prcssuresu r ports, the same bolts connecting .it' to flexible stz'rv-1 )latcs. The latter are attached to rigid IH'ZIOFQTS projecting from the stationary bed sills ot" the i'munlation by means of straining nuts, which permit the horizontal adjustment of the platform either longitudinally or t ransversely. The removable platt'orm is construct ed in sections resti ng on the imtermtsliate loadt'rame by metallic shoes and. steps. The sections of the platform may be removed independently without disturbing the load-'lrame or supports.

.lntheaccompanyingdrawings,thcinvention is represented by tit'ty-two views, numbered .Figures .35) to .108, inclusive, and 217 and 218. Fig. 55) is a plan diagram of a portion of a railway-trz'ick with the platform omitted, showing the rails and the positions of the platform-sup ports, connecting pressure pipes and interme diate reducers. a secondary reducer adapted to receive press ure from a number of intermtsliate orprimary reducers and transmit reduced pressuretothe bmun-colnmn. the said secondary reducer. showing the small pressure-columns and (me-halt ol' the fixing plate which encircles them and secures their casing-rings and diaphragms, as hereinafter described.

Fig. 02 is a vertical section of a primary reducer. Fig. (it; is a plan of the base of the primary reducer, showing some otthe small pressure chtunbers and columns in position. and a portion ot' the annular main prcssure-column and other parts. Fig. (it a vertical section ot" the base of the beam-su1 porting pillar and pressure-column, with a li(|uidpressure chamher and its attachments. Fig. ($5 is a vertical section of the same under a moditied. form, showing the combination of a reducer with a weighing-scale pillar base or gage. .Fig. tit; is a. hm'izontal section on the line co, Fig. ti-t. Figs. (57 and 68 are vertical sections ot' reducers under modified construction. Fig. (S9 is a plan o'lthe same. Figs. 70 and Tl. are clevations of the two ends otthe scaleframe and beam. Fig. 72 is a vertical transverse section on the line T2, Fig. 70. Fig. 725 is a rear end view of the S( t'l"l'2lll1(, 1 am, and indicator attiu'whments. Fig. T-tis a lu'n-izontal section of a portion of the frame on the line 74, Figs. and St). Fig. 75 is a plan view of the scale frame and beam attzichmcnts without the beam. Fig. 76 is a p'lanot'the beam. Fig. 77 is an elevation of the end weight with the supporting-plattorm thereot", and a portion of the operating-lever. Fig. 78 is a vertical section of the attaching-nut of said weight on alarger scale, showing the lower end of the suspensiolc rod in elevation. Fig. 7!) is a front elevation of the weigh beam case and its, contained parts, with portions of the casing broken away to show the weight-operatting levers. Fig. 80 is a vertical transverse section ot' the same on the line 80, Fig. 7th Fig. 81v is a horizontal section thereof on the line 81, Fig. '79, show ing the beam and frame in plan. Fig. 82

Fi (i is a vertical section ol' Fig. (it is a plan of the base ol an elevation of parts of two of the sectional weights, the bars of the supporting-frame, and the suspendingbeam rod 011 a larger scale.

Fig. 83 is an elevation of the weight-indicator plate and indicators, also on a larger scale. Fig. 84 is a rear end view of the frame, beam, and attachments in modified form. Fig. 85 is a front elevation of the said rear portion thereof. Fig. 86 is a front elevation of the forward end of the frame-beam and attachments, also in modified form. Fig. 87 is a plan of said forward end thereof. Fig. 88 is a front elevation of the indicator -rod, its guide, indicator-plate, and attachments on a larger scale. Fig. S9 is a plan thereof, showing the guidc rod in horizontal scctionon the-line 89, Fig. 88. Fig. 90 is an elevation, partly in section, of one of the friction-boxes of the weight-sup porting frames. Fig. 91 is a plan of a portion thereof. Fig. 92 is avertical section of a platform-pressure support. Fig. 93 is a plan of one-half thereof. Fig. 94 is a longitudinal section of a portion of a railway-track scaleplatform and its supports and bracing devices on the line 94, Fig. 97. Fig. 95 is a plan of one end of the same, parts of the rails and planking of the platform being omitted. 96 is a plan of another portion thereof, with the rails and planking omitted, showing vthe end of one section of the removable platform.

Fig. 97 is a transverse section on the line 97,

Fig. 94. Fig. 98 is a transverse section, on a larger scale, of a portion of the platform and intermediate stay or load frame on the line 98, Fig. 99, showing a hydraulic-pressure support in elevation. Fig. 99 is a side elevation of the same parts with the front support removed. Fig. 1.00 is a side elevation of an intermediate portion of the platform-beams with its bearing plate or shoe, which rests on the load-frame. Fig. 101 is a plan view of the same parts. Fig. 102 is an edge view of a step for supporting the ends of platform-beams. Fig. 103 is a plan of the same. Fig. 104 is a front edge view of a shoe applied to the end of the beam. Fig. 105 is a plan of a pair of such shoes. Figs. 106, 107, and 108 illustrate a simpler form of loadfra-me and platform constructed in one.' Fig. 106 is a longitudinal section 011 the line 106, Fig. 107. Fig. 107 is a transverse section on the line 107, Fig. 106. Fig. 108 is a plan of the same parts. Figs. 217 and 218 are detail sectional views, on a larger-scale, of parts of a reducer-chamber and its connections, hereinafter described.

Fig.

neath their heads are filled with a suitable cem ent or sealing material to make an airtight and liquid-tight joint. The sealing material is also passed around in the joint between the base433 and easing orshell 434. These screws clamp the shell or casing upon the outer periphery of an annular diaphragm, .436, which is formed with bent edges and con nectedby soldering or metallic packing, or any suitable means, to the base 433 and to the pressure -support column 437, which column and the annular diaphragm constitute together the top of the liquidcham.ber, which is formed in the base 433, and communicates through the plug 438 and pipe 439 with a pressure reducer, as hereinafter described. The bearing portion 437 of the column constitutes a removable head connected permanently by an annular flexible fixing-plate, 440, with the casing 434. A central screw, 441, in. the removable head 437 affords facility for forcing it off from the other portion of the column when the parts are to be separated. The column is surmounted by a spring, 442, of rubber or other material, surrounded by a stay-ring, 443. On this spring rests a bell-shaped cap, 444, the downwardlyproj ecting flange of which covers and protects the working parts, and excludes water from the upper part of the casing. An aperture is made in the fixing-plate 440 to allow free passage of air under changes of temperature. The platform, in any necessary number of sections, rests on the cups 444 of the supports 432.

The pipes 439 have no connection with each other, but,are carried separately from any suitable number of the pressure supports, each to its own small prcssure-ehambcr in a reducer 445, preferably constructed as shown in Figs.

62 and 63,'and consisting of an annular base, 446, a shell or casing, 447, a head or cap, 448, screw-bolts 449, connecting these parts, a two; partpressure-eolumn,450 450, and small pressure-chamber pieces 451, equal. in number with the supports connected with the reducer. Each of the said pressure-chamber pieces is secured to the base by a screw, 452, and is surmounted by a small pressure-column, 453, connected by an annular diaphragm, 454, with the chamber base piece 451, the outer edge of the diaphragm being clamped by a casing-ring, 455, and thej oint protected by an encircling sealingring, 456. The main pressure-column 450 rests on all of the small columns 453. The annular form of the base 446 affords facility for introducing and removing the chamber-pieces, with their attached diaphragms, without uncoupling the pipes 43.), which are permanently connected to the chamber-pieces by hollow plugs 457. The opening in the annular base is closed by a plate, 465, secured by screws 466.

449 represents a gage-screw, any necessary number of which are employed. to fix the column in position when required for filling the upper li quidchamber or for-transportation, or

when the small liquid-chambers are to be introduced or removed. The screws are so constructed that when screwed in till their heads strike the base 446 their ends form a gage, against which the base of the column may rest, leaving the diaphragms in. normal position. The liquidchamber at top then filled under pressure. \Vhen the apparatus is set up for use the screws are retracted sut'ticiently to leave the cohnnn tree. The top 450 of the 1)ressurc-columnis permanently connected by a diaphragm, 458, with the chamber-cap 44.8, and with this cap forms the liquid-chamber, from which reduced pressure is communicated through a pipe, 459, attached by a hollow plug, 460. This chamber is filled through a duct, 461., closed by a sealinglug,462. The pipe 459 from each primary reducer 445 is branched through a cou ling, 463, Fig. 60, of any suitable construction, so as to communicate with paired chambers in the sectmdary reducer indicated in dotted lines at 464 in Fig. 59, and shown on. a larger scale in. Figs. 60 and 61. The base 467 of. this reducer is provided with vertical openings, having shoulders 468 to receive the stems 469, which are held down by fixing tubes or rings 4T0, bearing upward against the said shoulders. These stems receive-the fixing-plugs 471. of branches 472 of the c mneeting-1 )ipes 459.

The stems 469 form each a part of the base of a small pressure-chamber, 473, annular plates 473" being attached to said stems by their inner edges and to the chambered base o li'the reducer 467 by their outer edges. The tops of the chambers are formed by annular diaphragms 474, connected to the small pressure-columns 474 and held down. by easingrings 475, on which rests a plate, 476, having openings i'orthe passage of the small pressurecolumns 474 and held permanently to the re: (l'lICOI' lMISO by screws 47?. Themain pressure column 478 of this reducer rests on the small. pressure-columns 474, as before described, and at its top is formed a common liquid-pressure chamber, 479, which may be constructed in a manner similar to that already described in connection with the primary reducer, or as here shown, with two connected plates, 1360 1264, constituting a removable chamber, to which is soldered a coupling-plug, 1381., having a duct which communimiteswith the sealing-plug 1382. 449" is a fixing-screw for use in shipment.

From the chamber 479 the liquid is conducted, with reducedpressure, by sealing-plug 1382 and a pipe, 480, either to a chamber, 48]., at the base of the beam-column 482, as illustrated in Fig. 64, or to another reducer,

- 483, as illustrated in Fig. 65, it" it is required to l'urtlua: reduce the pressure before com municating it to the beam-column482. Figs.

67, 68, and 69 illustrate other modificationsin the construtction of the supplemental reducer, in which it is not attached to the base of the scale-frame, as illustrated in Fig. 65, but made separately therefrom. The modifications shown in Figs. 65, 67, 6S, and .69 are more frequently used in connection with a gage for measuring liquid-pressure thanwith weights. In Fig. 67 the chamber 484 of the reducer is covered by a plate, 485, of compressible and flexible material instead 01 metal, as in the otherillustrations. I

486 represents the column of this supplemental reducer, and 487 the reduced liquidpressure pipe for conducting the pressure to the chamber beneath the beam-column.

4.88 is the cap-plate of the supplemental reducer when made separately vt'rom the base of the beam attachments. hen the normal pressure of the platform is insufficient to produce the proper initial pressure in the chambers and keep the parts in close contact, the reducers are reversed from the position shown in the detailed views Figs. 60 to 68, inclusive, taking the multiple pressure-pipes 472 at top and delivering through single reduced press ure-pipes 4.80 at bottom, as illustrated in Fig. 79. In this position the gravity of the main columns and that of the small. pressure-columns act, in conjunction with the 1H1 sure of the liquid, to keep the bearings in close contact.

l'n'Figs 64 and 65, 489 represents parts of the stationary scale-frame, to which the base 490 is connected by bolts 491. This scaleframe is preferably constructed with two hori zontal flanges, 4.92 493, cminected by aweb, 494, as illustrated in Figs. Ttlto 75, inclusive. From the upper flange rises a stamlard, 495, Figs. 70 and 79, forming the tulcrumsupport ol' the beam 496, which is connected thereto by a thin flexible plate, 497, and by a thin flexible plate, 498, and clamp-plate, 499, with the enlarged head 500 of the central stem, 501, of the beanr pressure column 482. The stem 501 is rigidly secured within the column by a base-plate, 502, constituting a nut between which and the lower end of the annular col umn 4812 is clamped at flexible fixing-plate, 503. The beam 496 is is formed with an enlarged head, 496", which made hollow, as illustrated in Fig. 86, for the reception of molten metal or other material to form a counter-balance. ot'the scale-:t'rame rises a standard, 504, Figs. '71 73, and 79, from which by thin flexible plates and clamp-plates (shown colleetivel y at 505) is suspended the fulcrum-block 506 of an indicze torrod, 507, said fulcrum-block being at tached by flexible plates and the clamp-plates 508 with. the beam. 496, near its rear or weight:- end. The details of these attachments are more fully described in other ap iilications, as also the horizontally and vertically ad just-able sensitive weight audits standard 509, the sliding tare or balancing weights 510 5.1..1v 51.2, weight-rod 513, one or more, and other aecessorles.

514 515, Fig. 79, represent a pair of stop screws adjustable in. the beam496 and coming in contact with the flange 493 and shoulder 5L6, respectively, so as to limit the vertical. motion of the beam. These screws may, it preferred, be screwed adj ustabl y into the flange and shoulder or other stationary parts, so that the beam will come in contact with their heads From the rear end with the same effect. At the rear extremity of the beam 496 is attached by flexible plates 517 a suspension-rod, 518, formed with a conical extremity, 518, as shown in Fig. 78, on

which rests a nut, 520, for the attachment of a weight, 519, Figs. 7 7, 79. Fig. 86 shows a similar weight, suspended from the load end of the beam, so as to'be removed to balance a load on the platform. The space shown at 521 in Fig. 86, between the top of the weight within the nut andthe lower end of the rod 518, allows the necessary vertical, play for the removal and application of the weight. Each of these weights is removed and applied by the vertical motion of a platform, 522, working in a guide, 523, and. operated through a link, 524, Figs. 7 7, 79, by a lever, 525, which is fulcrumed on a bar, 526, threaded at its upper end, and provided witha pair of nuts, 527 528, Fig. 77, for clamping it adjustably to the lower flange, 492, of the frame. In the present illustration the large weight 519 is supposed to represent a value of one million pounds. It is applied at the ordinary weight end of the beam, as illustrated in Fig. 79, or at the load end, as illustrated in Fig. 86, being operated by a platform,"522, and lever 525 in either case. \Vhen used at the weight end of the beam its weight is applied to the beam by the lowering of its platformto balance a load. Then it is applied to the load end the same effect is produced by lifting the weight from the beam, the scale having been previously balanced with the weight on. An indicator-rod, 530, Figs. 79, 83, shows, by its pointer 530 and the figures on the indicatorplate 529, when the million-pound weight is counteracting a load on the platform by its application to or removal from the beam, as the case may be.

532 533 534 represent weight-rods suspended from the beam at different points, and pro- 'vided with flanges or collars 535 for receiving each one of a vertical series of weights, 536 537 538, which, when notapplied to the beam, are supported by conical collars 539 on vertically-mofing weightframes 540 541 542, operated by compound levers 544 545, connected at one end by links 546 with. the said weight-frames 540 541 542 and at the other r the load end of the beam. by a thin-plate con nection, 553, as shown in Figs. 79 and 80, constructed with conical collars 554,- each supporting one of a series of weights, which in their normal position are thus suspended from the head of the beam, while the scale is balanced without a load to be weighed.

To remove any necessary number of the weights-555 corresponding with the load to be weighed, a verticallydnoving central rod, 556,

Fig. 80, is employed, said rod being provided with collars 557 at such distances asunder that the said rod will, by a vertical movement, lift the weights 555 in succession from the suspend ing-beam frame 552 in the same way and with The weight-supporting rods 540 541, &e.,

may be guided in plates 542, Figs. 84 and 85, secured adjustably to the flanges 492 493 of the frame by screws 541, so that the weights may be adjusted concentrically to the suspension-rods from the beam. 1

The links connecting the operating-levels and weightframes may be applied singly, as illustrated in Figs. 79 and 80, but are preferably paired, as illustrated at 546 in Figs. 84 and 85. The links 546 are connected with the weight-frame 542 by a pin, 624, of such length that when the washers 625 are pressed firmly against the ends thereof by screws 626 the links will be held firmly in position, but will not be clamped. The lower ends of the links are secured by a similar pin, 624, screws 626, and washer 625. This pin 624 is set in a pin, 627, oflarger diameter, forming shoulders to prevent the links bearing against the lever.

eral strain on the links, and thus avoid lateral strain on the weight-frame.

The ten-thousand-pound weights 555 may, if preferred, be transferred to the other side of the beam-fulcrum in the space 555, Fig. 79, to the right of the second set of weights.

Hand-levers 561 562 563 564 565, Figs. 79, 80, and 81., are connected by links 566 with the respective fixing-rods 548 549 550 551 530 of the weight-levers above described, so as to enable the operator to work the levers and lift the said weights with case. 549, 550, 551, and 530",-attaehed to the respective fixingrods, indicate by figures on the plate 529 the value of the weights hanging upon or removed from the beam, as the case may be, as illustrated in Fig. 83.

In order to hold the fixingarods securely in any position in which they may be set while supporting the weight-frames and any neces sary number of the weights through the medium of the operating-levers, friction-boxes 567 are employed, preferably constructed and provided in the flanges of the boxes 567, for the reception of screws 569, by which the Pointers 54S,

Radial holes 570 are provided in. the l'lange of the other member, 568, of the box for the reception of an instrument by which the lower part of the box is screwed within the other. The upper member is formed with a groove or recess, 571, to receive a fillet of leather or other suitable packing material, which, by screwin the part 568 into the part 567, is pressed in contact with the rod with the required force to prevent it from being moved by the gravity of the weights, frames, and levers. As a further means of holding the weights in position, the levers which operate the heaviest/ of the multiple weights, or if necessary, every set oi 'an axis, 623, having its hearings in a bracket,

576, which is connected permanently to the frame and p re j cots downward on each si dc of ii to lever 54:5, receiving guide-screws 577, which,

when the lever is adjusted in its proper working position, are turned up suiiiciently to bear lightly on the said lever in order to guide it in its vertical motion without undue :lriction.

It will be apparent that from the eccentricity ol' the drum 574, as well as the motion of the arm 573, the outer end of the lever 573.574, to which the weight 531 is applied, increases in length while the load end, to which the weightlever 54.5 is connected, decreases in length as the said lever 54:) rises and the weight 531. de sccnds. This gives the counter-balauce increasing force as the weights are lifted in succession, so that the power of the counter-balance may correspond with the gravity of the parts to be balanced.

The compound levers may be dispensed with and all the weight't'ramcs operated directly by single levers, as described in another appliczr tion. (ompouml levers are adopted in the present case to bring their indicators together in connection with a single indicatonplatc, and to bring all their handles within convcn ieut reach of the operator in his position in front of the said indicator1 )latc.

The pOintersS-LC", &c., are preferably attached to the indieator-rmls throughthe medium ot' separate holding-rods 578, as shown in Fig. 86, screwed into the upper ends of the fixing-rods, so as to be readily adjustable vcrtically to regulate the height of the pointer. The pointer then. consists of a needle passed transversely through the holder 578, near its extremity, and held by a set-screw, 57$).

The construction of the multiple weights and their suspension-rods and supporting l'rames is illustrated in detail in Fig. 82, where 538 538 represent parts of two iuljaceut weights, 534. being the suspension weightrod attached to the beam, and 5&2 the two vertical bars of the weight supporting i'rame. These weights are each. .made in two parts to admit of applying them to their supportingi'raines and suspension-rods, as shown. The two parts are connected together by scrcw dowels 6031, Figs. 84, 85, and by screws 60-11. of common construction. The holes for the dowel-screw (5031. being lirst made and the dowels inserted, the holes for the screws 604i are then finished and tapped, so that the two parts of the weight are held accurately in their proper relative position to receive the screws 604], which secure them iirmlytogether. Al'- ter this the recesses and shoulders are made to receive the weightl'rames and. suspendingrods.

The indi('*ator-rod 507 is 1 n.'eil .rably coir structed in two parts, the :l'ree end 507 being made small and. light, as shown .in Fig. 88. (where it is greatly shortened for convenience of representation,) and attached to the stock or butt 507 of the rod by a conpling nece, 580.

The indicator-rod is provided with a needlepoint, 581,, secured in its extremity, as shown.

582 in Figs. SS and 8%) represents a guidepiece lixcd to the indicator-rod by a screw. 588, and working over a guide-rod, 584, which is screwed into a guide -holder, 58?). The holder 585 is screwed in a plate, 586, which is attached adjustably to the beam 4:96, or to the stationary frame, it reierr(, d, by screws 587, occupying openings of larger diameter in saidv plate 586, as indicated by dotted lines in Figs. 68 and 89, so that the parts may be ac curately adjusted as req nired. The upper sto 588, of the indicator is set up or down by scrt'aving the guide-rod 584: within its holder 585. The lower stop, which is formed of the head 58.) of said holder, is adjusted vertically by screwing the holder up or down in the plate. The graduated indicator-plate Bill) is screwed to the plate 586, as shown.

591 and 592, 79, S0, and 81, are graduated weight-bars attached to the beam 4-96, carrying weights 59; and 594, the larger being employed in the. present illustration for indicating hundreds of pounds upto ten thonsand, and the smallerl'or single pounds, up to one hundred. For operating these weights sliding rods 59;") 596 are employed, provided with lingers 597. These rods pass through the case 595) (300, and ureferably have their bean ings in standards 59S, erected from the 'llange 493 otthe scale-frame, as shown in the example of the rod 4"")5, instead of in the case. as shown at 596 in Fig. 79.

58)!) is an inner casing inclosing the beams and their supporting parts and accessories, with the, weights and the devices for o )erating the same, with the exception of the handles of the hand-levers, which project out in front, as shown .in Figs. 80 and 81. This inner case is provided with a glass front at (5011. to expose the scale-beams and weights to view. ll; will appear that the means described for opcrati ng the weights by hand-levers and sliding rods obviates all necessity for opening the inner case in the ordinary use of the scale. The outer case, 600, is employed to completely inelose the glass front and the ope *ating levers and rods, small shutters 602 being provided in said outer case to allow the sliding of the rods 595 596 when in use, and to cover their ends when the scale is closed for security.

The scale-frame may rest on beams 629, as shown in Fig. 80; but it is preferred to construct the frame as shown in Fig. 86, the flanges 492 493 being connected at their cxtremities and bolted in supporting-recesses in the side posts of the case 600.

The construction of the platform is shown in Figs. 94 to 108, inclusive.

603 represents sectional string-pieces supporting transverse planking 604, on which the rails 431 are fixed. The stringers 603 rest on transverse beams 606 through the medium of cast-iron shoes 607, secured to the ends of the string-pieces 603 by bolts 608, Fig. 99, as may be necessary. These shoes may be variously constructed according to the position in which they are placed and according to the capacity of the scale or the severity of the wear and tear to which it is subjected. The string pieces or longitudinal beams 603 are made in sections of any convenient length. Fig. 94

shows a section extending across two spaces between the supports hereinafter described. The shoes 607, when appliedto the ends of the beamsections, are preferably constructed as shown in Figs. 99, 1.04, and 105, each shoe having the form. of an angle-piece, secured by horizontal and vertical bolts 608, as indicated by dotted lines in Fig. 99. The said shoes are made in pairs, as represented in Fig. 105,.each with two or more tocsprojecting into the spaces between those of the other, so that both may transmit their loads to the center of the support.

The shoes rest on cast-iron steps 609; bolted to the transverse beams 606, which, through the medium 0 tplates 617 ,hereina't'ter described, rest on the liquid-pressure supports 432, com- 'niunicating, through the pipes 439, with the reducers hereinafter described. The supports rest on sills or sleepers 61], which may be supported by masonry 612.

To stay the plattorm against horizontal motion and to prevent the tipping ot' the cross beams 606 by the bending of the main loadbeams 603, longitudinal beams 613 are secured to the transverse beams 606 of the platform by bolts 614, which also fix thereto the stay-plates 615 616 and bracket or knee-piece 617. These parts are const-ruetcdv and applied as follows: The knee-piece 617 consists of a rigid casting secured by bolts 613 to the beam 606, where it rests upon the support 432, extending downward in the shape of a rigid knee beneath the stay-beam 613, into the under side of which it is notched, and there secured by the bolts 614, as before stated. The longitudinal flexible plate 615, which is held 'at its center by the same bolt, 614, is secured at its extremities by nuts 619 to the ends of rigid brackets 620,

611. The transverse flexible plates 616, Figs. 97 and 98, are likewise held by the bolt 614, and at their inner ends are fixed by nuts 622 to brackets 623, secured to the bed-sill 611 by bolts 630.

are secured to the load-frame against longitudinal. motion by rods 631, Figs. 94, 99, fixed to the knee-pieces 617 by nuts 632, and to brackets 633 on the beams by nuts 634. The lateral motion of the platfornrsections on the intermediateload-frame is checked at the ends jecting upward from the steps 609, and acting against flanges on the shoes 607. At the intermcdiate supports the longitudinal beams have shoes 610, constructed with lugs 637, near each end, extending into recesses in the beam to fix them against lateral motion on the beams. These shoes rest on steps 63S, flanged at each on d to hold the shoes and beams against lateral motion.

By the flexible plate connections 615 616 to cured against horizontal motion, and enabled to resist traction and longitudinal shocks and strains from locomotives and trains, while its free vertical motion for weighing purposes is not restrained. The longitudinal bcam-613 and transverse beams 606, with their connections, will be seen to constitute an independent leadframe interposed between the platform 603 604 and its supports 432.

. By constructing the platform in sections, with their ends resting on the transverse supas particularly illustrated in Fig. 99, a platform consisting of the longitudinal beam 603 and the planking 604 and rails 431, secured thereto, may readily bercmoved in sections, as required, without disturbing the interme diate load-frame, its connections, and supports. The supports 432 are arranged opposite each other in pairs, as illustrated in Figs. 59, 9,5, 96, and 108, one pair being placed beneath each transverse beam 606. The pressurepipes 439, from the respective supports of each pair, are conducted to chambers"arranged opposite each other in the reducer 445, as shown in Fig. 59. The removable platform-sections may be made only long enough to span the space between one pair otsupports an d the next; or they may be adapted to stretch across two spaces, as illustrated in Fig. 94, or more than two spaces, if desired.

For platform-scales of small capacity, or where the wear and tear are not so severe, the transverse beams 606 may be permanently bolted to the longitudinal string-pieces 603, and I rest directly on the'tops of the pressuresupports or on interposed fiat plates bolted lheret o.

. By straining the plates 615 in either direction j by means of the nuts 6.19 the entire platform l may be adjusted or moved ltmgitudinally; or

which are fastened by bolts 621 to the bed-sill of the beams 603 by lugs 635, Fig. 1102, proporting-beams 606, as above described, and- The longitudinal beams 603 of the platform the intermediate frame, 613, the platform is sev binat-ion of the base 433,

by straining the plates 616 by means of the nuts 622 it may be adjusted laterally as required.

The weigh-frame and attachments will be seen to constitute an effective and superior standard gage for measuring liquid-pressure. Liquid being employed to transmit the pressure, it is immaterial whether the pressure represents units of weight or units of pressure area. 'Where the pressure is large, an intermediate reducer such as shown in Fig. may be interposed, or where the pressure is very large a reducer such as shown in Fig. (S7.

Gages of more simple construction are dcscribed in other ap )lications.

\Vhate ver novel subject-matter l have set forth and not claimed or attempted to claim herein 1 have claimed or attempted to claim in other applications, or have reserved to be claimed in future original applications.

The :tollowing is claimed as new:

t. In, a hydraulic- 1ressure support, a pressure-column setmred to its base by means of an annular diaphragm, substantially as herein set forth.

2. In a hydraulie-pressure support, a pres.'- ure-cohimn centered within a surrounding shell or casing by means of an annular diaphragm secured mrmanentl y theretc and to the chamber-base, substantially as set .t'orth.

3. In a hydraulicpressure support, a pressure-column made in two parts, one secured to the base and the other to the surroumlingshell or casing.

4. Ina hydraulic-pressure support, a pressure-column made in two parts, with a screw, ill, for separating them, as set forth.

5. In a l1ydraulic-pressure support, the com casing 434-, countersunk tap-screw 4.35, and the tapped socket tending only partially through the tlange oi the casing, so as to admit of forming a tightly sealed joint, substantially as set forth.

6. The cmnbination ot the removable cap ill with a hydraulic-1 rcssure support, substantially as described.

7. in combination with a hydraulimpress ure support, the bell-shaped cap, otcast-iron or other suitable material, constructed sub stantially as described, to adapt it to exclude water from the upper part'ot' the case and tect the moving parts.

S. In ahydraulicp1.'cssurc support, the com bined cap 4-H, rubber 442, and pressure-column 43?, substantially as and for the purposes setl'orth.

9. 'In a hydraulicpressure support, the combi'nation ot' the cap 444-, rubber 4 :2, and retain'inga-ingtliv withthe prcssure-colum 11 43?, substantially as set forth.

It). in combination with one or more sim ple or compound hydraulic-pressure supports, one or more reducers through. which pressure on the support is transmitted to the weighbeam, substantially as described.

11. The reducer constructed substantially as herein described, with. a base, 4A6, one or promore small pressure-chambers, main pressureeolunm 450, case H7, and chambered cap 448, si'iitably connected by screws or bolts H9.

12. The combination of the sealing-ring 45c with the chambered piece 451, diaphragm i714, ring 455, and small pressiue-column 453, as and for the purposes set forth.

13. In combination with the main receiving-chamber base 4&6, the small chambered pieces 451., each secured inposition by a screw, 452, substantially as set forth.

114 The combination, with the base 446 and pre urecolun1n 450, of one or more gagebolts, 44:9, substantially as and to]: the purposes set forth.

.15. The combination, with the base of a )1'cssure-column or reducer, of one or more small pressure-chambers separable therefrom without the disconnect-ion of their pipes, sul stantially as. explained.

16. The annular base et-lti, adapted to permit the removal. of the small pressure-chamber, substantially as described.

17. The combination, in the chambered cap 448, of the feeding-aperture 46.1., sealing-plug 462, and pipe-screw 460, substantially as and for the purposes set :t'orth.

18. The combination, with the pressure column 478 of a scale or reducer, ot' the small pressure-eolumns 4H and chambers 451' 3, arranged in pairs, with a single pipe connecting with both chambers of each pair for the purpose of equalizing the pressure, substantially as set forth.

19. In combination with the base lo the annular diaphragms silt, the small pressurecolumns 47- and the rings 475, the plate 176, secured to the base by screws 47? or otheru use to hold the said ringsin posititm, substantially as set forth.

20. The combination, with the base it}? of a reducer, and the pressure-chamber stem 4.6. of the fixing-tube +70, substantially as and for the pin-poses set forth.

21. A gage or scale reducer secured to the base of a weigh-case, in cmnbination with a pressurc-column, substantially as set forth.

22. The combination of the annular pressurccolumn 482, the central stem, 501, coir struc'ted with an enlarged head, 500, for the attachment of the beamconnection, and the base-plate 502, securing the annular column and the stem together and clampingthe tlexible fixing-plate 50;

23. A scalc-beam, 4.96, constructed with an enlarged head, 496*, made hollow tor the. re ception of balancing material, as set forth.

24.. The construction and combination of the weight 519 with conical seating attz'tching-nut 520 and the flanged SllSlWllSlUll-lfltl 51S, substantially as set forth.

25. The combination of the elevating-plat term 522 with the weight 519 and suspensionrod 518 518, constructed and operating substantially as set forth.

26. In a wcigl1ing-machine, the combination of a weight-elevating bar, frame, or platform and primary and secondary levers with suitable connections for operating the same, substantially as set forth.

27. The combination, with a weight-supporting bar or frame and alever or levers for operating the same, of a fixing-rod attached independently to the lever or levers, substan-. tially as set forth.'

28. The combination of the index 530'with the fixing-rod 530, with or without the intermediate holder, 578.

29. Two guiding and sustaining frictionboxes, in combination with a bar attached to a weight-operating lever, substantially as set forth.

30. The combination, with a flanged \i 'eighbeam frame, of friction-boxes 567 568 and a bar or rod connected directly or indirectly with the weight-operating levers, substantially as and for the purposes set forth.

3 The adjustable guide-plates 512*, in combination with the flanges 492 493 and weightsupporting frames 5-10, substantially as and for the purposes set forth.

32. In combination, with a scale-beam, a pair ofadjustal'ile stop-screws, 511 515, applied either to the said beam or to the ease or frame to limit the notion of the beam in either di rection.

The combination, with the weight-supporting frame or its lever, of the variable counterbalaneing-weight 531, substantially as set forth.

' 3%. The combination of the drum 574, band 575, arm. 573, and suspended weight with the weighti 'rame 542, substantially as and fort-he purpose set forth.

In a weighing-scale or pressuregage, the indieator-rod 507 507, constructed in. two parts with the coupling-piece 580, substantially as set forth.

36. In a weighing-scale or pressure-gage, the- Y combination of the indicator-rod 507 and the needlepoint-581, as set forth.

ing-studs 598 and flange 493 of the frame, as

T131116 fixed against horizontalmotion, placed under the load-platform and resting on the weighing levers or supports.

43. The construction of the intermediate load-frame, as herein described, with longitudinal stringers 613 and transverse ties 606, held against longitudinal motion. by stay plates or rods 615, substantially as and for the purposes set forth.

44. The connectingknees 617, in. combina tion with the string-pieces 613, cross-ties 606, and stay-plates 615 616, substantially as and for the purposes set forth.

' 45. The combination, with a hydraulic pressure support, of the intermediate loadframe fixed against horizontal motion, and the separate load-platform, substantially as and for-the purposes set forth.

16. A flexible plate or rod with suitable straining devices, combined with th e load frame or platform and the frame or bed of a platformscale for the purpose of adjusting and fixing said load frame or platform against horizontal movement, substantially as set forth.

47. The combination, with a load frame or platform, of the longitudinal flexible fixing plate or rod 6.15, nuts 619, bracket 620-, and

bed or sill 611, substantially as and for the purposes set forth.

48. The combination of theload frame'or platform, transverse flexible fixing plate or rod 616, nuts 622, and bed-frame 611 623, substantially as and for the purposes set forth.

49. The combination of the steps 609, kneepieces 617, stringers 613, and transverse beams 606, substantially as set forth.

50. The shoes 607, applied to the ends of the platform-beams 603, and employed in eombi nation with thesteps 609, substantially as explained.

51.. In a railway-track scale, aloadplatfbrm made in sections resting by their ends independently on the platform-supports, substantially as set forth.

7 ALBERT H. EMERY. lVitnesses MAHLoN RANDOLPH,

O. O. WooLsoN. 

